1.Model number;437.517.537.617.637
2.Size;3 1/2"-26"
3.Type;        drill bit
4.Machinetype;drilling tool
5.Material;carbide
6.Processing type;forging
7.Use;coal mining,crude oil,water well and geological exploration
8.Brand;Kingdream.CS
9.Maximum drilling depth;2000m
10.Maximum drilling hours;70 hours